<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>SVG绘制折线</title>
	</head>
	<body>
		<svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="100%" height="100%">
             <polyline points="0,40 40,40 0,80 48,80" style="fill:white;stroke:red;stroke-width:6" />			
		</svg>
	</body>
</html>